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Side by Side Diff: third_party/WebKit/Source/wtf/ArrayBufferView.h

Issue 1436153002: Apply clang-format with Chromium-style without column limit. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 1 month ago
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1 /* 1 /*
2 * Copyright (C) 2009 Apple Inc. All rights reserved. 2 * Copyright (C) 2009 Apple Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 1. Redistributions of source code must retain the above copyright 7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer. 8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright 9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the 10 * notice, this list of conditions and the following disclaimer in the
(...skipping 19 matching lines...) Expand all
30 30
31 #include "wtf/PassRefPtr.h" 31 #include "wtf/PassRefPtr.h"
32 #include "wtf/RefCounted.h" 32 #include "wtf/RefCounted.h"
33 #include "wtf/RefPtr.h" 33 #include "wtf/RefPtr.h"
34 #include "wtf/WTFExport.h" 34 #include "wtf/WTFExport.h"
35 #include <limits.h> 35 #include <limits.h>
36 36
37 namespace WTF { 37 namespace WTF {
38 38
39 class WTF_EXPORT ArrayBufferView : public RefCounted<ArrayBufferView> { 39 class WTF_EXPORT ArrayBufferView : public RefCounted<ArrayBufferView> {
40 public: 40 public:
41 enum ViewType { 41 enum ViewType {
42 TypeInt8, 42 TypeInt8,
43 TypeUint8, 43 TypeUint8,
44 TypeUint8Clamped, 44 TypeUint8Clamped,
45 TypeInt16, 45 TypeInt16,
46 TypeUint16, 46 TypeUint16,
47 TypeInt32, 47 TypeInt32,
48 TypeUint32, 48 TypeUint32,
49 TypeFloat32, 49 TypeFloat32,
50 TypeFloat64, 50 TypeFloat64,
51 TypeDataView 51 TypeDataView
52 }; 52 };
53 virtual ViewType type() const = 0; 53 virtual ViewType type() const = 0;
54 const char* typeName(); 54 const char* typeName();
55 55
56 PassRefPtr<ArrayBuffer> buffer() const 56 PassRefPtr<ArrayBuffer> buffer() const {
57 { 57 return m_buffer;
58 return m_buffer; 58 }
59 }
60 59
61 void* baseAddress() const 60 void* baseAddress() const {
62 { 61 return m_baseAddress;
63 return m_baseAddress; 62 }
64 }
65 63
66 unsigned byteOffset() const 64 unsigned byteOffset() const {
67 { 65 return m_byteOffset;
68 return m_byteOffset; 66 }
69 }
70 67
71 virtual unsigned byteLength() const = 0; 68 virtual unsigned byteLength() const = 0;
72 69
73 void setNeuterable(bool flag) { m_isNeuterable = flag; } 70 void setNeuterable(bool flag) { m_isNeuterable = flag; }
74 bool isNeuterable() const { return m_isNeuterable; } 71 bool isNeuterable() const { return m_isNeuterable; }
75 bool isShared() const { return m_buffer ? m_buffer->isShared() : false; } 72 bool isShared() const { return m_buffer ? m_buffer->isShared() : false; }
76 73
77 virtual ~ArrayBufferView(); 74 virtual ~ArrayBufferView();
78 75
79 protected: 76 protected:
80 ArrayBufferView(PassRefPtr<ArrayBuffer>, unsigned byteOffset); 77 ArrayBufferView(PassRefPtr<ArrayBuffer>, unsigned byteOffset);
81 78
82 inline bool setImpl(ArrayBufferView*, unsigned byteOffset); 79 inline bool setImpl(ArrayBufferView*, unsigned byteOffset);
83 80
84 // Helper to verify that a given sub-range of an ArrayBuffer is 81 // Helper to verify that a given sub-range of an ArrayBuffer is
85 // within range. 82 // within range.
86 template <typename T> 83 template <typename T>
87 static bool verifySubRange(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffs et, unsigned numElements) 84 static bool verifySubRange(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset , unsigned numElements) {
88 { 85 if (!buffer)
89 if (!buffer) 86 return false;
90 return false; 87 if (sizeof(T) > 1 && byteOffset % sizeof(T))
91 if (sizeof(T) > 1 && byteOffset % sizeof(T)) 88 return false;
92 return false; 89 if (byteOffset > buffer->byteLength())
93 if (byteOffset > buffer->byteLength()) 90 return false;
94 return false; 91 unsigned remainingElements = (buffer->byteLength() - byteOffset) / sizeof(T) ;
95 unsigned remainingElements = (buffer->byteLength() - byteOffset) / sizeo f(T); 92 if (numElements > remainingElements)
96 if (numElements > remainingElements) 93 return false;
97 return false; 94 return true;
98 return true; 95 }
99 }
100 96
101 virtual void neuter(); 97 virtual void neuter();
102 98
103 // This is the address of the ArrayBuffer's storage, plus the byte offset. 99 // This is the address of the ArrayBuffer's storage, plus the byte offset.
104 void* m_baseAddress; 100 void* m_baseAddress;
105 101
106 unsigned m_byteOffset : 31; 102 unsigned m_byteOffset : 31;
107 bool m_isNeuterable : 1; 103 bool m_isNeuterable : 1;
108 104
109 private: 105 private:
110 friend class ArrayBuffer; 106 friend class ArrayBuffer;
111 RefPtr<ArrayBuffer> m_buffer; 107 RefPtr<ArrayBuffer> m_buffer;
112 ArrayBufferView* m_prevView; 108 ArrayBufferView* m_prevView;
113 ArrayBufferView* m_nextView; 109 ArrayBufferView* m_nextView;
114 }; 110 };
115 111
116 bool ArrayBufferView::setImpl(ArrayBufferView* array, unsigned byteOffset) 112 bool ArrayBufferView::setImpl(ArrayBufferView* array, unsigned byteOffset) {
117 { 113 if (byteOffset > byteLength() || byteOffset + array->byteLength() > byteLength () || byteOffset + array->byteLength() < byteOffset) {
118 if (byteOffset > byteLength() 114 // Out of range offset or overflow
119 || byteOffset + array->byteLength() > byteLength() 115 return false;
120 || byteOffset + array->byteLength() < byteOffset) { 116 }
121 // Out of range offset or overflow
122 return false;
123 }
124 117
125 char* base = static_cast<char*>(baseAddress()); 118 char* base = static_cast<char*>(baseAddress());
126 memmove(base + byteOffset, array->baseAddress(), array->byteLength()); 119 memmove(base + byteOffset, array->baseAddress(), array->byteLength());
127 return true; 120 return true;
128 } 121 }
129 122
130 } // namespace WTF 123 } // namespace WTF
131 124
132 using WTF::ArrayBufferView; 125 using WTF::ArrayBufferView;
133 126
134 #endif // ArrayBufferView_h 127 #endif // ArrayBufferView_h
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